apps/metadata/nsf.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include <stdlib.h>
   4 #include <ctype.h>
   5 #include <inttypes.h>
   6
   7 #include "system.h"
   8 #include "metadata.h"
   9 #include "metadata_common.h"
  10 #include "metadata_parsers.h"
  11 #include "rbunicode.h"
  12
  13 bool get_nsf_metadata(int fd, struct mp3entry* id3)
  14 {
  15     /* Use the trackname part of the id3 structure as a temporary buffer */
  16     unsigned char* buf = (unsigned char *)id3->path;
  17     int read_bytes;
  18     char *p;
  19
  20
  21     if ((lseek(fd, 0, SEEK_SET) < 0)
  22          || ((read_bytes = read(fd, buf, 110)) < 110))
  23     {
  24         return false;
  25     }
  26
  27     id3->length = 120*1000;
  28     id3->vbr = false;
  29     id3->filesize = filesize(fd);
  30
  31     if (memcmp(buf,"NSFE",4) == 0) /* only NESM contain metadata */
  32     {
  33         return true;
  34     }
  35     else
  36     {
  37         if (memcmp(buf, "NESM",4) != 0)  /* not a valid format*/
  38         {
  39             return false;
  40         }
  41     }
  42
  43     p = id3->id3v2buf;
  44
  45     /* Title */
  46     memcpy(p, &buf[14], 32);
  47     id3->title = p;
  48     p += strlen(p)+1;
  49
  50     /* Artist */
  51     memcpy(p, &buf[46], 32);
  52     id3->artist = p;
  53     p += strlen(p)+1;
  54
  55     /* Copyright (per codec) */
  56     memcpy(p, &buf[78], 32);
  57     id3->album = p;
  58     p += strlen(p)+1;
  59
  60     return true;
  61 }
  62